<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Promise自定义封装</title>
  <script src="./promise.js"></script>
</head>
<body>
  <script>
    let p = new Promise((resolve,reject)=>{
      resolve("OK")
      reject('Error')
      // throw 'throw-error'
    })
    console.log(p)
    // p.then(value=>{
    //   console.log(value)
    // },reason=>{
    //   console.warn(reason)
    // })
  </script>
</body>
</html>